Pith Number

pith:BTL6VJFV

pith:2011:BTL6VJFVWMT7MVU3NQ727E2SVE

not attested not anchored not stored refs pending

All-optical link for direct comparison of distant optical clocks

Atsushi Yamaguchi, Hidekazu Hachisu, Miho Fujieda, Motohiro Kumagai, Shigeo Nagano, Tetsuya Ido

arxiv:1108.2775 v1 · 2011-08-13 · physics.optics · physics.atom-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BTL6VJFVWMT7MVU3NQ727E2SVE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:00:54.333702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cd7eaa4b5b327f6569b6c3faf9352a93c78b26bdd1f6bc86dac185a6f62e7b2

Aliases

arxiv: 1108.2775 · arxiv_version: 1108.2775v1 · doi: 10.48550/arxiv.1108.2775 · pith_short_12: BTL6VJFVWMT7 · pith_short_16: BTL6VJFVWMT7MVU3 · pith_short_8: BTL6VJFV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/BTL6VJFVWMT7MVU3NQ727E2SVE \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 0cd7eaa4b5b327f6569b6c3faf9352a93c78b26bdd1f6bc86dac185a6f62e7b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03fc8caded6b5ba79334303e31dc47d54ae821e8b11fc7aeebce5c08fa7087ba",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2011-08-13T08:30:12Z",
    "title_canon_sha256": "75391cece0c813a7a6934c2482df99fcfefbf3ed9173c18b08132e08a91bbc51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2775",
    "kind": "arxiv",
    "version": 1
  }
}